Power module test device and test method
A test device and power module technology, which is applied in the field of power module test devices, can solve the problems of high test risk, large number of power electronic power modules, difficulties in current stress and thermal stress, etc., and achieve the effect of ensuring safety
Pending Publication Date: 2018-01-09
NR ELECTRIC CO LTD +1
View PDF5 Cites 8 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The operation test of power electronic power modules such as modular multi-level voltage source converter sub-modules is to verify the voltage stress, current stress and thermal stress, etc. Whether it can run stably under the action, verify the conditions under the maximum continuous operation load condition, the maximum temporary overload operation condition, the minimum DC voltage condition, the over-current shutdown condition, the short-circuit current condition and the anti-electromagnetic interference condition. Whether the module meets the design requirements under the action of voltage stress, current stress and thermal stress, etc., the existing technology basically reproduces the long-term steady-state operation on the equivalent back-to-back miniaturized converter station test platform The voltage stress, current stress and thermal stress suffered by the sub-module, but affected by the system parameters of the equivalent back-to-back miniaturized converter station test platform, equivalently reproduce the voltage received by the sub-module when a short-circuit fault occurs in the converter station Stress, current stress and thermal stress are very difficult or even impossible to achieve, and it is difficult to meet the above test requirements at the same time, and whether it is an equivalent back-to-back miniaturized converter station test platform or an equivalent chained static synchronous Both have the disadvantages of high requirements on the rated capacity and short-circuit capacity of the power grid system, a large number of power electronic power modules, and high test risks.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment approach
[0060] Figure 10 It is the first implementation of the sub-module M provided by the present invention, including two turn-off semiconductor switches T, two freewheeling diodes D, a voltage equalizing resistor R, an energy storage capacitor C and a sub-module The protection component TP, each of the turn-off semiconductor switches T is connected in antiparallel with one of the freewheeling diodes D, and the two turn-off semiconductor switches T are connected in parallel with the energy storage capacitor C after being connected in series, and the energy storage capacitor C is connected in parallel with the voltage equalizing resistor R, and at least one of the turn-off semiconductor switches T is connected in parallel with a sub-module protection part TP, and the two ends of the sub-module protection part TP are the input and output terminals of the sub-module M (X1 and X2).
[0061] Figure 11 It is the second implementation of the sub-module M provided by the present invent...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a power module test device and test method. The device comprises an energy implementing power supply E, a charging power supply Ey, a stable-state inductor L, a first short circuit inductor L1, a second short circuit inductor L2, an energy implementing switch Km, a valve charging switch Kv, an energy storage charging switch Kc, a first short circuit switch K1, a second short circuit switch K2, a short circuit capacitor assembly C1 and two valve groups V. Each valve group V consists of serially connected sub-modules M. Ends of different valve groups V are directly connected or connected with each other through the inductor L, and other ends are connected through the inductor L. The inductor L2, the switch K2 and the short circuit capacitor assembly C1 are serially connected and then are parallelly connected with the inductor L1. The inductor L1 and the switch K1 are serially connected and then are parallelly connected with a serial connection branch consisting of at least one the serially connected sub-module M in the valve group V. According to the invention, by combining the test method, voltage stress, current stress and thermal stress under actual stablestate working conditions and transient-state working conditions can equivalently reappear on at least one sub-module M.
Description
technical field [0001] The invention relates to a device for a steady-state operation test and a transient operation test of a power electronic module, in particular to a power module test device and a test method. Background technique [0002] More and more high-power power electronic products are widely used in the construction of smart grids and become the key technology in the field of modern global energy Internet technology. In particular, voltage source converters are widely used in the fields of DC transmission and reactive power compensation. In the past, voltage source converters were mostly two-level or three-level converters. As the demand for high-power power electronic products develops in the direction of higher voltage and larger power capacity, two-level or three-level technology Can not meet the increasing voltage and capacity requirements, more and more high-power power electronic products adopt modular multi-level topology, such as flexible direct current...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01R31/40
Inventor殷冠贤朱铭炼谢晔源李海英姜田贵连建阳
OwnerNR ELECTRIC CO LTD